Australian carrier Optus has let slip the details of its new iPhone subscription options, meant to coincide with the release of the 3GS, a leak claims. The carrier's "yes" cap plans should now range from $19 to $79 a month, and by default provide between 100MB and 1GB of data; missing is a $29 option, which will come sometime after launch, if at all. Additional payments may be necessary based on
